A bruise and swelling.
The injection is intramuscular. Pulling back on the plunger may pull some blood out.....that’s normal. You just don’t want it in a vein or (although deeper) artery.
Really not a big deal. I’ve pushed emergency drugs without the plunger withdrawal.
An Epi Pen is self injecting and I.M. administered w/o a plunger withdrawal.
what about when they do it the wrong way...like it is suppose to subcutaneous and not IM or vice a versa.
When looking up the MMR shot I saw some comments from people that they had been giving it the wrong way. It is suppose to be subcutaneous.